package com.wanmait.recruit.util;

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Md5Util {
    public static String md5(String plainText) {
        byte[] secretBytes = null;
        try {
            secretBytes = MessageDigest.getInstance("md5").digest(
                    plainText.getBytes());
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("error md5");
        }
        String md5code = new BigInteger(1, secretBytes).toString(16);
        for (int i = 0; i < 32 - md5code.length(); i++) {
            md5code = "0" + md5code;
        }
        return md5code;
    }

    public static String md5Super(String str)
    {
        return Md5Util.md5(Md5Util.md5(str).substring(5,29));
    }

    public static void main(String[] args) {
        System.out.println(Md5Util.md5("LiangYi"));
        System.out.println(Md5Util.md5Super("LiangYi"));
    }

}
